It is understood, roof greening is divided into two forms, one is only on the roof laying drought, shallow root system, strong adaptability to be plant & ldquo; light roof greening & rdquo; another is on the roof planting trees and grass, rockery dig pool & ldquo; roof garden style & rdquo;, which, however, must be strictly in accordance with the load of the building design requirements for the construction.
Urban greening to the roof to space, Cuntucunjin the city used to be secondary development using, is nowadays the most popular city green way. What are the requirements for the construction of the roof?
Wang Xianmin, Secretary General of the world's roof greening conference, said the first is the problem of load. It is understood that the roof load is a measure of the roof of the unit area to withstand the weight of the index, which determines the size of the building's security and the success of the roof greening.
“ generally speaking, because the old building in the design of the time did not specifically set aside the roof greening of the load, doing air garden every square meter should not exceed 500 kg. The old buildings in Beijing are generally 150 to 200 kg load, so these old buildings as long as it does not belong to the reconstruction, is not about to demolition, from the principle of can do the roof greening, but should do light roof greening & mdash; mdash; roof turf. This kind of lawn per square meter of load probably not more than 40 kg, 150 kg of load is relatively safe and relatively safe.
; &rdquo